Plugo Software Engineer Interview Questions and Answers

Q1. Write a rest API which return employee data based on ID.
Ans. 
Create a REST API to retrieve employee data by ID
• Use a GET request to /employees/{id} endpoint

• Query the database for employee data based on the provided ID

• Return the employee data in JSON format
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4 sections Quantitative Analysis, Programming Based (output analysis, error detection), Aptitude and ML Engineering ( activation functions, models etc basics)

Q1. Merge Sort simple divide and conquer but a pain to execute they really just look for how logical you are and if your approach is correct
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Q2. Talk about your projects previous experience etc
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Q1. What do you think about Q
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Q2. Personality based questions like what are your hobbies, what drives you etc
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Q1. About Binary search
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Q1. About project and ER diagram
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3 questions easy-medium level leetcode problem I solved 2 completely and 3rd question partially (9/15 test cases passed) to move on to 2nd round

Q1. Implement an app similar to splitwise
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Q1. Explain collection framework and uses
Ans. 
Collection framework is a set of interfaces and classes in Java that provide a way to store and manipulate groups of objects.
• Provides interfaces like List, Set, Map for storing collections of objects

• Includes classes like ArrayList, HashSet, HashMap for implementing these interfaces

• Allows for easy manipulation, sorting, searching, and iteration of collections

• Used in various applications like data processing, data storag
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Q2. Explain springboot and it's annotation
Ans. 
Spring Boot is a Java-based framework used for creating standalone, production-grade Spring-based applications.
• Spring Boot simplifies the process of creating Spring applications by providing defaults for configuration and eliminating the need for XML configuration files.

• Annotations in Spring Boot are used to simplify the configuration of Spring applications by providing metadata about the application.

• Examples of annota...read more
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Q1. Explain request lifecycle in rails?
Ans. 
Request lifecycle in Rails involves routing, controller actions, rendering views, and responding to the client.
• 1. Request comes in through the browser or API endpoint.

• 2. Rails router determines which controller and action to route the request to.

• 3. Controller action processes the request, interacts with the model, and prepares data for the view.

• 4. View template is rendered with the data from the controller.

• 5. Response ...read more
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Q2. Code Merge Sort using Ruby
Ans. 
Implement Merge Sort algorithm in Ruby
• Divide the array into two halves recursively

• Merge the sorted halves back together

• Use a helper method to merge the two halves
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